The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. An 80% confidence...

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The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. An 80% confidence interval that results from examining 763 customers in Taco Bell's drive-through has a lower bound of 154.7 seconds and an upper bound of 160.1 seconds Complete parts (a) through (c) The mean service time from the 763 customers is 157.4 seconds (Type an integer or a decimal. Do not round) (b) What is the margin of error for the confidence interval? The margin of error is 2.7 seconds (Type an integer or a decimal. Do not round) (c) Interpret the confidence interval Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals Do not round) OA. One can be % confident that the mean drive-through service time of Taco Bell is seconds. OB. One can be % confident that the mean drive-through service time of Taco Bell is between seconds OC. The mean drive-through service time of Taco Bell is seconds % of the time. OD. There is a % probability that the mean drive-through service time of Taco Bell is between seconds 27 seconds and seconds and The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. An 80% confidence interval that results from examining 763 customers in Taco Bell's drive-through has a lower bound of 154.7 seconds and an upper bound of 160.1 seconds Complete parts (a) through (c) The mean service time from the 763 customers is 157.4 seconds (Type an integer or a decimal. Do not round) (b) What is the margin of error for the confidence interval? The margin of error is 2.7 seconds (Type an integer or a decimal. Do not round) (c) Interpret the confidence interval Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals Do not round) OA. One can be % confident that the mean drive-through service time of Taco Bell is seconds. OB. One can be % confident that the mean drive-through service time of Taco Bell is between seconds OC. The mean drive-through service time of Taco Bell is seconds % of the time. OD. There is a % probability that the mean drive-through service time of Taco Bell is between seconds 27 seconds and seconds and

Answer rating: 100% (QA)

a Sample mean lower bound upper bound 2 1... View the full answer